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1957 spark plugs

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Old January 1st, 2021, 06:59 PM
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1957 spark plugs
I want to change out my spark plugs on my ‘57 98 with J-2 to NGK iridium. I’m seeing conflicting info on the gap. Is it 0.030” or 0.035”?
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Old January 1st, 2021, 08:12 PM
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Either gap will work, a larger gap produces a bit higher voltage spark.
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Old January 2nd, 2021, 09:30 AM
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Thanks I’ll try the 0.035 and see how she runs.
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